#include<stdio.h>
#include<unistd.h>
int main()
{
    pid_t id = fork();

    if(id < 0)
    {
        perror("fork");
        return 1;
    }
    else if(id == 0)
    {
        //child
        while(1)
        {
            printf("我是子进程，pid：%d, ppid：%d\n",getpid(), getppid());
            sleep(1);
        }
    }
    else
    {
        //Parent
        while(2)
        {
            printf("我是父进程，pid：%d, ppid：%d\n", getpid(), getppid());
            sleep(3);
        }
        
    }
    return 0;
}
